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Secure expression evaluator - Drop-in replacement for expr-eval without CVE-2025-12735 vulnerability

Better assertions for node, reporting the expr, filename, lineno etc

tiny util for getting and setting deep object props safely

js-expr-runner allows you to parse an expression string and run it in an isolated context

Mathematical expression evaluator fork with exports map, prototype pollution and code injection security fixes

A secure, high-performance expression evaluator for dynamic chart rendering

Mathematical expression evaluator

Scope registry / runtime state container for @wildwinter/expr: owned property scopes + foreign (host-resolved) scopes, save/load, and the scopeRegistrySpec interop format. Produces the EvalContext and ExpressionSchema that expr consumes.

Security-maintained drop-in fork of expr-eval. Patches CVE-2025-12735 and CVE-2025-13204 by restricting member access. Original API unchanged.

Framework-neutral (vanilla TS + DOM) visual editor for @wildwinter/expr expressions: a hybrid pill-strip + AND/OR tree builder with a raw-text fallback, property picker, and live validation. Scopes, properties and functions come from an injected Dialect +

this is a simple javascript expression parser

Transpile and evaluate MediaWiki `#expr` syntax into JavaScript.

Matched-constraint specificity: score how many atomic constraints in a @wildwinter/expr condition are actively holding it true. Shared by Storylet Studio (storylet draw priority) and Patter (dialogue best-match).

Mathematical expression evaluator, extends from expr-eval

A TypeScript port of expr-lang/expr v1.17.8 — expression language engine.

Safely evaluate & parse user-defined GitBook expressions.

This plugin allows the [Tabnas](https://github.com/tabnas/jsonic) JSON parser to support expression syntax.

nv-js-bin-asgn-expr-ir ====================== - assignment-expr ast template - for copy/paste in nvlang

Lezer-based Expr grammar